JPS6314445B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a twisted flat cable manufacturing apparatus.

The twisted flat cable has a plurality of pairs of core wires, and each pair has alternately twisted portions in which the core wires are twisted and flat portions in which the core wires are parallel. Conventionally, in manufacturing this type of cable, a supply supporting two core drums in tandem is rotated when forming a twist section, and stopped when forming a flat section. Rotating or stopping such a heavy supply is not preferable because of the loss of energy.

The present invention has been made based on the above-mentioned circumstances, and provides a twist-flat cable manufacturing apparatus capable of forming a twist portion flat portion while continuously rotating a supply.

The invention will be explained in detail below with reference to the drawings.

In the figure, supplies 3a to 3c are provided that each support two bobbins 1 with their axes parallel to each other and are driven to rotate around an axis 2a perpendicular to the bobbin axis, and the supplies 3a and 3c at both ends are the same. The central supply 3b in the direction is constantly rotated in the opposite direction at the same rotational speed. The core wires drawn out from each supply pass through rotary plates 4a to 4c,
The film is sent to the film crimping section 8 via the comb guides 6 and 7.

The rotary eye plates 4a, 4b, and 4c have gears of the same diameter and the same pitch formed on their outer peripheries, and are meshed with each other.
By a mechanism not shown, each of the supplies 3a to 3c is rotated in the same direction at a higher speed than the corresponding supplies 3a to 3c, or rotated in the same direction and at the same speed as the supplies 3a to 3c.

Further, on the exit side of the rotary eye plates 4a to 4c, a film pressing section 8 having a pitch roll 6 and a pair of heating rollers 7 arranged in two stages is provided, which will be described later. 4a~
4c Two comb guides 9 that reciprocate and move up and down at predetermined timings, which will be explained later, between the exit side and the exit side.
a to 9b are provided.

The pitch roll 6 is for holding the twist pitch of the twist portion formed as described later, and the twist portion is sandwiched between this roll and a presser roll (not shown for simplicity) to maintain the twist pitch. is retained.

Using the apparatus of the present invention having the above configuration, a twisted flat cable is manufactured in the following manner.

That is, each supply 3a to 3c is constantly rotating, and the corresponding rotating eye plate 4a to 4c, into which two core wires from each supply are inserted, is connected to each supply 3.
It rotates in the opposite direction to a to 3c at a higher speed than each supply or at the same speed as the supplies.

During high-speed rotation of each of the rotary eye plates 4a to 4c, the paired core wires are twisted between the supply and the rotary eye plate and between the rotary eye plate and one of the comb guides 9a.

At this time, the number of twists of the twisted part of the core wire formed between each supply and the corresponding rotary batten is equal to the difference between the supply rotation speed and the rotary batten rotation speed, and the number of twists between the rotary batten and the comb guide is equal to the difference between the supply rotation speed and the rotary batten rotation speed. The twisted part formed in the above-mentioned twisted part is twisted in the opposite direction, and the number of twists is equal to the number of rotations of the rotary batten.

Here, the rotary eye plates 4a to 4c are supplied to the supply 3a to 4c.
When rotated at the same speed as 3c, the twisted part between the rotary batten and the supply becomes the rotary batten 4a due to the progression of the core wire.
~ 4c and the comb guide 9, the oppositely stranded portions merge, and eventually between the rotary perforations 4a to 4c and the comb guide 9, the supply rotational speed is A twisted part with a twist number equal to is formed.

At this point, the other comb guide 9b, which was engaged with the fiber group at the rear end of the preceding twisted portion to prevent the twisted portion from untwisting on the inlet side of the pitch roll 6, rises and separates from the fiber group. , rotary eye plate 4a
~ 4c returns to the exit side and descends, engages with the core group at the rear end of the twisted part formed this time, and comb guide 9
a, 9b are Pitzirol 6 in synchronization with the progress of the core wire.
move in the direction of

As this state progresses, a flat portion is formed following the currently formed twisted portion.

The comb guide 9a, which was engaged with the front end of the twisted portion formed this time, rises just before the entrance side of the pitcher roll 6 and separates from the core group, and the twisted portion enters the pitcher roll. The comb guide 9a separated from the front end of the twisted part formed this time is the rotary eye plate 4a~
It returns to the exit side of 4c, where it descends and engages with the core group.

In this state, high-speed rotation of the rotary eye plates 4a to 4c is started, and formation of the next twist portion is started.

As described above, by repeating high-speed rotation and low-speed rotation of the rotating eye plate, twisted portions and flat portions are formed alternately, and the film is crimped at the film crimping portion 8 on both sides of the core wire group to form a twisted flat portion. Cables are manufactured continuously.

In the apparatus of the present invention, the rotary plate with a small inertial mass is alternately rotated at high speed and at a low speed, and the supply with a large inertial mass is constantly rotated, so that there is little loss of energy.

Note that the present invention is not limited to the above embodiments. For example, the number of supply rotary plates is not limited to the three illustrated, but may be any number. Also,
The means for regulating the front and rear ends of the twisted portion to be formed and preventing untwisting is not limited to the comb guide shown in the example, but may be replaced by any means having the same effect.

[Brief explanation of the drawing]

The figure is a perspective view of one embodiment of the present invention. 3a to 3c...Supply, 4a to 4c...Rotary plate, 6...Pitsuchi roll, 7...Heating roll,
8...Film crimping part.

Claims (1)

[Claims] 1. A supply that holds the bobbin with two bobbin axes parallel to each other and is constantly rotated around an axis perpendicular to each bobbin axis, and a pair of core wires supplied from this supply are inserted and run in the same direction as the supply. a rotary eye plate that alternately rotates at a higher speed and the same speed as the supply in the same direction; and a pitch roll that holds the twist pitch of the twisted portion formed in the core wire that has passed through the rotary eye plate. , a core wire is provided between the rotary eye plate and the pitch roll, and runs between the rear end of the previously formed twist part on the inlet side of the pitch roll and the front end of the currently formed twist part on the exit side of the rotary eye board. A twisted flat cable characterized by having two comb-shaped guides that reciprocate and move up and down in synchronization with the movement of the group, and a film crimping section that crimps a film to the core group that has passed through the pitch roll. manufacturing equipment.